A copillar[5]arene-based fluorescence “on–off–on” sensor is applied in sequential recognition of an iron cation and a fluoride anion

2017 ◽  
Vol 41 (5) ◽  
pp. 2148-2153 ◽  
Author(s):  
Jin-Fa Chen ◽  
Xiao-Bin Cheng ◽  
Hui Li ◽  
Qi Lin ◽  
Hong Yao ◽  
...  
Keyword(s):  
Fluoride Anion ◽  
Complexation Reaction ◽  
Sequential Detection ◽  
Iron Cation ◽  
Chain Dimer ◽  
Competitive Complexation ◽  
Sequential Recognition

A copillar[5]arene-based [c2]daisy-chain dimer is applied in sequential detection of Fe3+ and F− through a competitive complexation reaction.

Fluorescence ‘on–off–on’ chemosensor for the sequential recognition of Hg2+and cysteine in water

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38308-38315 ◽  
Author(s):  
Ye Won Choi ◽  
Jae Jun Lee ◽  
Ga Rim You ◽  
Cheal Kim
Keyword(s):  
Water Samples ◽  
Fluorescent Chemosensor ◽  
Sequential Detection ◽  
Sequential Recognition

Fluorescent chemosensor showed the sequential detection of Hg2+and cysteine, and could be applied for quantification of Hg2+in water samples.

scholarly journals A single colorimetric sensor for multiple targets: the sequential detection of Co2+and cyanide and the selective detection of Cu2+in aqueous solution

RSC Advances ◽  
2017 ◽  
Vol 7 (29) ◽  
pp. 17650-17659 ◽  
Author(s):  
Hyo Jung Jang ◽  
Tae Geun Jo ◽  
Cheal Kim
Keyword(s):  
Aqueous Solution ◽  
Simultaneous Detection ◽  
Colorimetric Sensor ◽  
Selective Detection ◽  
Sequential Detection ◽  
Multiple Targets ◽  
Colorimetric Chemosensor ◽  
Sequential Recognition

A colorimetric chemosensor was developed for simultaneous detection of Co2+and Cu2+and for sequential recognition of Co2+and CN−.

CHEMICAL EFFECTS IN MULTIELECTRON PROCESSES IN THE FLUORIDE ANION

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-777-C9-780
Author(s):  
R. HESSABI ◽  
D. URCH
Keyword(s):  
Fluoride Anion ◽  
Chemical Effects

Synthesis of nickel selenites, their solubility and bonding in them

1982 ◽  
Vol 47 (8) ◽  
pp. 2069-2076 ◽  
Author(s):  
Miroslav Ebert ◽  
Zdeněk Mička ◽  
Ilona Peková
Keyword(s):  
Magnetic Properties ◽  
Hydrogen Bonding ◽  
Solubility Diagram ◽  
Reflectance Spectroscopy ◽  
Chloride Anion ◽  
Fluoride Anion ◽  
Infrared Absorption Spectroscopy ◽  
Magnetic Parameters ◽  
Nickel Cation ◽  
Spectrochemical Series

The solubility diagram of the NiSeO3-SeO2-H2O system at 25 °C was studied, and on its basis, Ni(HSeO3)2.2 H2O was prepared. This selenite and NiSeO3.2 H2O were investigated by infrared absorption spectroscopy and by electronic reflectance spectroscopy and their magnetic properties were determined. Based on the infrared spectra, the force constants of the selenium-oxygen bonds were determined and the hydrogen bonding was characterized. The electronic reflectance spectra and the magnetic parameters indicate an octahedral arrangement of the coordination sphere of the nickel cation and characterize the selenite anion as a ligand that in the spectrochemical series assumes a position between the fluoride anion and water and in the nephelauxetic series, between ethylenediamine and the chloride anion.

Cleavage of the Epimines of 1,6-Anhydrohexoses with Fluoride Anion

2005 ◽  
Vol 70 (12) ◽  
pp. 2075-2085 ◽  
Author(s):  
Jiří Kroutil ◽  
Klára Jeništová
Keyword(s):  
Fluoride Anion ◽  
Ring Cleavage ◽  
Protecting Group ◽  
Reaction Conditions ◽  
Aziridine Ring ◽  
Cleavage Reactions ◽  
Derivatives Of ◽  
Fluoro Derivatives

Aziridine ring cleavage reactions of five N-nosylepimines (2-6) having D-talo, D-galacto, D-manno, and D-allo configurations with potassium hydrogendifluoride under various reaction conditions have been performed. The cleavage regioselectively afforded diaxial isomers of vicinal amino-fluoro derivatives of 1,6-anhydro-β-D-gluco- and mannopyranose 7-11 in 51-94% yields. Removal of 2-nitrobenzenesulfonyl protecting group with benzenethiol has been attempted in the case of compound 10.

Physical Insights into Facilitation of an Unprecedented Complexation Reaction on the Surface of a Doped Quantum Dot Leading to White Light Generation

2021 ◽  
Author(s):  
Sabyasachi Pramanik ◽  
Mihir Manna ◽  
Biswajit Hudait ◽  
Shilaj Roy ◽  
Satyapriya Bhandari
Keyword(s):  
Quantum Dot ◽  
White Light ◽  
Complexation Reaction ◽  
Environmentally Sustainable ◽  
White Light Generation ◽  
Light Generation

Herein we report a complexation reaction between Zn2+ ions, being present on the surface of an orange-red emitting environmentally sustainable Mn2+-doped ZnS QD, and non-emitting copper quinolate complex (CuQ2 complex),...

scholarly journals A Turn-ON fluorometric biosensor based on ssDNA immobilized with a metal phenolic nanomaterial for the sequential detection of Pb(ii) and epirubicin cancer drug

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12361-12373
Author(s):  
A. Arunjegan ◽  
P. Rajaji ◽  
S. Sivanesan ◽  
P. Panneerselvam
Keyword(s):  
Acridine Orange ◽  
Cancer Drug ◽  
Sequential Detection ◽  
Label Free ◽  
Fluorescent Biosensor ◽  
Turn On

In this paper, we propose a fluorescent biosensor for the sequential detection of Pb2+ ions and the cancer drug epirubicin (Epn) using the interactions between label-free guanine-rich ssDNA (LFGr-ssDNA), acridine orange (AO), and a metal–phenolic nanomaterial.

scholarly journals Investigation of the transport characteristics of Pb(II) in sand-bone char columns

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110236
Author(s):  
Gang Li ◽  
Jinli Zhang ◽  
Jia Liu ◽  
Tao Luo ◽  
Yu Xi
Keyword(s):  
Adsorption Capacity ◽  
Flow Rate ◽  
Dose Response ◽  
Construction Materials ◽  
Column Height ◽  
Maximum Adsorption Capacity ◽  
Complexation Reaction ◽  
Bone Char ◽  
Inlet Flow ◽  
Inlet Flow Rate

Pb(II) leakage from batteries, dyes, construction materials, and gasoline threaten human health and environmental safety, and suitable adsorption materials are vitally important for Pb(II) removal. Bone char is an outstanding adsorbent material for water treatment, and the effectiveness in Pb(II) removing need to be verified. In this paper, the transport characteristics of Pb(II) in columns filled with a sand and bone char mixture were studied at the laboratory scale, and the influences of the initial concentration, column height, inlet flow rate, and competing ion Cu(II) on Pb(II) adsorption and transport were analyzed. The Thomas and Dose-Response models were used to predict the test results, and the mechanisms of Pb(II) adsorption on bone char were investigated. The results showed that the adsorption capacity of the bone char increased with increasing column height and decreased with increasing initial Pb(II) concentration, flow rate, and Cu(II) concentration. The maximum adsorption capacity reached 38.466 mg/g and the saturation rate was 95.8% at an initial Pb(II) concentration of 200 mg/L, inlet flow rate of 4 mL/min, and column height of 30 cm. In the competitive binary system, the higher the Cu(II) concentration was, the greater the decreases in the breakthrough and termination times, and the faster the decrease in the Pb(II) adsorption capacity of the bone char. The predicted results of the Dose-Response model agreed well with the experimental results and were significantly better than those of the Thomas model. The main mechanisms of Pb(II) adsorption on bone char include a surface complexation reaction and the decomposition-replacement-precipitation of calcium hydroxyapatite (CaHA). Based on selectivity, sensitivity, and cost analyses, it can be concluded that bone char is a potential adsorbent for Pb(II)-containing wastewater treatment.

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